VIVA offers IP based Converged Communications Solutions. You may contact VIVA for SIP Trunking, IP PBX & PSTN integration, MS OCS & IP PBX integration, Managed VoIP and ''''Secure'''' VoIP.
Aastra 6739i SIP VoIP phone is a high-performance desktop phone with a touch screen and provides high-quality corporate communications with advanced features such as Bluetooth and Gigabit Ethernet.